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Sirui 50mm f/1.8 Anamorphic 1.33x Lens (Fujifilm X-Mount)

BH #SISRMEK7X • MFR #SRMEK7X
Sirui 50mm f/1.8 Anamorphic 1.33x Lens (Fujifilm X-Mount)
Key Features
  • Robust Aluminum Lens for APS-C Cameras
  • 2.4:1 De-Squeezed Format; 10-Blade Iris
  • Schott Glass with Nano Coatings
  • Horizontal Blue Streaks/Less Stray Light
The Sirui 50mm f/1.8 Anamorphic 1.33x Lens, with an X-mount, is designed for APS-C cameras and increases the horizontal FOV by 33% in comparison with traditional 50mm APS-C lenses. The result is equivalent to a wider, 37.5mm APS-C lens. After a de-squeeze, the captured image is displayed in an anamorphic 2.4:1 format in a 16:9 setting. This fast f/1.8 lens is designed with an aluminum housing and features optics with multilayer Nano coatings. It has renowned Schott optical glass lens elements and delivers rectangular aspect ratios, long horizontal lens flares, and oval bokeh.
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Sirui 50mm F/1.8 Anamorphic Overview

The Sirui 50mm f/1.8 Anamorphic 1.33x Lens, with an X-mount, is designed for APS-C cameras and increases the horizontal FOV by 33% in comparison with traditional 50mm APS-C lenses. The result is equivalent to a wider, 37.5mm APS-C lens. After a de-squeeze, the captured image is displayed in an anamorphic 2.4:1 format in a 16:9 setting. This fast f/1.8 lens is designed with an aluminum housing and features optics with multilayer Nano coatings. It has renowned Schott optical glass lens elements and delivers rectangular aspect ratios, long horizontal lens flares, and oval bokeh.

One of the features of this lens is that it produces horizontal blue streaks with less stray light, which Sirui calls sci-fi horizontal flares. A key aspect of anamorphic lenses is highlighted oval bokeh, and this lens achieves a shallow depth of field and oval bokeh with its 10 aperture blades. While the lens has a robust housing, it's also designed to be lightweight for use with your compact APS-C camera.

Key Features

  • Robust lens with advanced optics for compact APS-C cameras
  • 33% horizontal field of view increase over standard 50mm APS-C lenses
  • Anamorphic 2.4:1 format in a 16:9 setting after de-squeeze
  • Aluminum housing
  • Schott optical glass
  • Multilayer Nano coatings
  • Horizontal blue streaks with less stray light
  • 10 aperture blades
  • 2.8' minimum focusing distance
  • 67mm filter thread
  • Magnification: 1:15.38 (V), 1:20.17 (H)

Sirui 50mm F/1.8 Anamorphic Specs

Focal Length50mm
Lens MountFUJIFILM X
Lens Format CoverageSuper35/APS-C
Maximum Aperturef/1.8
Minimum Aperturef/16
Minimum Focus DistanceFrom : 33.5" / 85 cm
Optical Design11 Elements in 8 Groups
Diaphragm Blades10
Gear MOD & PitchFocus: 0.8 MOD / 32 Pitch
Iris: 0.8 MOD / 32 Pitch
Front Diameter69 mm
Filter Thread67 mm
Focus Rotation143.6°
Horizontal Squeeze (Anamorphic)1.33x
Image StabilizationNo
Length4.2" / 106.6 mm
Weight1.23 lb / 560 g
Packaging Info
Package Weight1.845 lb
Box Dimensions (LxWxH)6.7 x 4 x 3.8"

Sirui 50mm F/1.8 Anamorphic Reviews

Great buy

By Frank
Rated 5 out of 5
Date: 2022-06-29

An anamorphic lens is an essential tool for anyone seriously interested in shooting video, and the Sirui 50mm is an excellent choice for the price. Using it on my Panasonic Lumix G9, I've found it works very well for both stills and video.

Fun lens

By Jonathon
Rated 5 out of 5
Date: 2021-08-22

This is such a fun lens! You can get some really fun looks from it, and the clarity is pretty solid. Granted, it's no GM glass, but still high quality and I use it for high end creative projects.

Magic with FX3

By Gregory
Rated 5 out of 5
Date: 2021-07-14

Recently did a music video shoot mostly shot with this lens, and reviewing the footage made my jaw drop. The separation between subject and background is so beautiful. Add a pro mist filter and it feels like a true pleasing "cinematic" image that is difficult to explain in words. The flaring is there but not exaggerated, you really have to try to get the flares which I like. I was bummed it's not a 2x squeeze, but honestly it's kind of perfect for what you get at 1.33x. If you're looking to get into anamorphic without breaking the bank, I would highly recommend this lens.

It's a great lens for its price

By Andres Mario
Rated 5 out of 5
Date: 2021-04-30

It really shock me to find an anamorphic lens at its price, use in on an FS7, didn't now it worked for S35 sensor.

Must have for Panasonic GH5!

By Robert
Rated 5 out of 5
Date: 2021-04-27

Light weight, sharp images, great flares and bokeh that will add style to your work for a unbeatable price.

great lens

By Paula
Rated 5 out of 5
Date: 2021-02-19

as expected, great lens.. it will allow you to take advantage of the full sensor of your GH5. (16:9).. fast lens, focus ring is great because you dont need to spining too much to change focus, from 2.5ft to inifnity you will only need to rotate the ring about half of the lens.. something that is not very common with native lumix lenses.

A great Anamorphic lens

By Dimitrios
Rated 5 out of 5
Date: 2022-02-15

For the price, the quality of the image is outstanding. It gives you this cinematic anamorphic Bokeh that makes all the difference. If your camera can correct the 1.33x distortion it will make your shots even more enjoyable. My Atomos Ninja can easily do it.

A fantastic lens!

By Luke
Rated 5 out of 5
Date: 2022-02-13

I love shooting with this thing. Gives all of my work a fun twist and makes a visually interesting picture. It may not be perfect, but its character delivers so much.

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What is the focal length equivalent on a Fuji ...

What is the focal length equivalent on a Fuji camera?
Asked by: Robert
The focal length equivalent of the Sirui 50mm Anamorphic 1.33 Lens will be 38mm.
Answered by: Nicholas
Date published: 2021-06-15

Pardon my ignorance. Everything I've read about ...

Pardon my ignorance. Everything I've read about anamorphic says that 1.33 is not strong enough and that 2x is needed to get the true anamorphic feel. Now, you add the 16x9 aspect. So does the 1.33-1 lens provide a greater squeeze in the 16x9 aspect or is it still just a 1.33-1 squeeze?
Asked by: Jim
You will want 2x if your intention is to achieve more intense flares. But for the purpose of achieving a 2.40:1 ratio within a 16x9 frame, then the 1.33x will do just fine.
Answered by: Bruno
Date published: 2021-08-27

What is the width of the focus ring? I'm thinking ...

What is the width of the focus ring? I'm thinking of using Tilta Seamless Focus gear rings with this.
Asked by: Jason
The Sirui 50mm f/1.8 Anamorphic 1.33x Lens has a focus ring diameter of 2.72 / 69.2mm.
Answered by: Dennis A
Date published: 2021-11-04

I hear this lens has a blue color cast, will that ...

I hear this lens has a blue color cast, will that be a big issue if I use auto white balance?
Asked by: T
This lens produces very desirable anamorphic blue flares (streaks) These artifacts are utilized most famously by the director J.J. Abrams. It does not create an undesirable blue cast that covers the entire frame.
Answered by: Dennis A
Date published: 2021-07-05

What diameter is the focus ring? I want to get ...

What diameter is the focus ring? I want to get some smallrig gear rings and am not sure what size to get?
Asked by: Isaac
We recommend the Cool-Lux LuxGear Follow Focus Gear Ring (60 to 61.9mm) (BH #COLG6061 • MFR #951410)
Answered by: jabarih
Date published: 2021-08-25

Does this work with GH5?

Does this work with GH5?
Asked by: Amir
Yes it does.
Answered by: Najee
Date published: 2020-11-16

will this lens work with SONY FDR AX100? Or any ...

will this lens work with SONY FDR AX100? Or any other anamorphic lens?
Asked by: jorgen
As long as your camera and the lens are both Sony E mount compatible it should work
Answered by: Brandon
Date published: 2020-12-06

Is the lens have a filter thread ?

Is the lens have a filter thread ?
Asked by: Magne
Yes, the Sirui 50mm Anamorphic lens has a 67mm.
Answered by: Nicholas
Date published: 2021-05-05
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